Add script to this program so that when a button is clicked, a script will perform validation tests.

1. Test the experation date for validity (i.e. expires after current date).

2. Test the digits entered in the card number field to see whether they are valid for the type of credit card selected.

* Visa card numbers always begin with the number 4 and use 16 digits.

* Mastercard numbers always begin with 5 and use 16 digits

*American Express card numbers always begin with the number 3 and use 15 digits.

3. If the card numbers are inccorrect based on the card type selected, ask the user to either select a different credit card type or change the card number. If the number of digits corresponds correctly, acknowledge that.

CIW JavaScript Specialist

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Visa

MasterCard

American Express

Card #

Exp Date: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2011 2012 2013 2014 2015 2016 2017 2018